/Engine/Source/Runtime/AudioExtensions/Public/ISoundfieldFormat.h
[TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< [ISoundfieldMixerStream](API\Runtime\AudioExtensions\ISoundfieldMixerStream) > CreateMixerStream ( const [ISoundfieldEncodingSettingsProxy](API\Runtime\AudioExtensions\ISoundfieldEncodingSettingsProxy) & InitialSettings )